import * as plugins from '../plugins.js';
import * as shared from './shared/index.js';
import * as appstate from '../appstate.js';
import { appRouter } from '../router.js';

import {
  DeesElement,
  customElement,
  html,
  state,
  css,
  cssManager,
  type TemplateResult,
} from '@design.estate/dees-element';

import type { IConfigField, IConfigSectionAction } from '@serve.zone/catalog';

@customElement('ops-view-config')
export class OpsViewConfig extends DeesElement {
  @state()
  accessor configState: appstate.IConfigState = {
    config: null,
    isLoading: false,
    error: null,
  };

  constructor() {
    super();
    const subscription = appstate.configStatePart
      .select((stateArg) => stateArg)
      .subscribe((configState) => {
        this.configState = configState;
      });
    this.rxSubscriptions.push(subscription);
  }

  public static styles = [
    cssManager.defaultStyles,
    shared.viewHostCss,
    css`
      .loadingMessage {
        text-align: center;
        padding: 40px;
        color: ${cssManager.bdTheme('#71717a', '#a1a1aa')};
      }

      .errorMessage {
        background: ${cssManager.bdTheme('#fee2e2', 'rgba(239,68,68,0.1)')};
        border: 1px solid ${cssManager.bdTheme('#fecaca', 'rgba(239,68,68,0.3)')};
        border-radius: 8px;
        padding: 16px;
        color: ${cssManager.bdTheme('#dc2626', '#ef4444')};
        margin: 16px 0;
      }
    `,
  ];

  public render() {
    return html`
      <ops-sectionheading>Configuration</ops-sectionheading>

      ${this.configState.isLoading
        ? html`
            <div class="loadingMessage">
              <dees-spinner></dees-spinner>
              <p>Loading configuration...</p>
            </div>
          `
        : this.configState.error
          ? html`
              <div class="errorMessage">
                Error loading configuration: ${this.configState.error}
              </div>
            `
          : this.configState.config
            ? this.renderConfig()
            : html`<div class="errorMessage">No configuration loaded</div>`}
    `;
  }

  private renderConfig(): TemplateResult {
    const cfg = this.configState.config!;

    return html`
      <sz-config-overview
        infoText="This view displays the current running configuration. DcRouter is configured through code or remote management."
        @navigate=${(e: CustomEvent) => {
          if (e.detail?.view) {
            appRouter.navigateToView(e.detail.view);
          }
        }}
      >
        ${this.renderSystemSection(cfg.system)}
        ${this.renderSmartProxySection(cfg.smartProxy)}
        ${this.renderEmailSection(cfg.email)}
        ${this.renderDnsSection(cfg.dns)}
        ${this.renderTlsSection(cfg.tls)}
        ${this.renderCacheSection(cfg.cache)}
        ${this.renderRadiusSection(cfg.radius)}
        ${this.renderRemoteIngressSection(cfg.remoteIngress)}
      </sz-config-overview>
    `;
  }

  private renderSystemSection(sys: appstate.IConfigState['config']['system']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Base Directory', value: sys.baseDir },
      { key: 'Data Directory', value: sys.dataDir },
      { key: 'Public IP', value: sys.publicIp },
      { key: 'Proxy IPs', value: sys.proxyIps.length > 0 ? sys.proxyIps : null, type: 'pills' },
      { key: 'Uptime', value: this.formatUptime(sys.uptime) },
      { key: 'Storage Backend', value: sys.storageBackend, type: 'badge' },
      { key: 'Storage Path', value: sys.storagePath },
    ];

    return html`
      <sz-config-section
        title="System"
        subtitle="Base paths and infrastructure"
        icon="lucide:server"
        status="enabled"
        .fields=${fields}
      ></sz-config-section>
    `;
  }

  private renderSmartProxySection(proxy: appstate.IConfigState['config']['smartProxy']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Route Count', value: proxy.routeCount },
    ];

    if (proxy.acme) {
      fields.push(
        { key: 'ACME Enabled', value: proxy.acme.enabled, type: 'boolean' },
        { key: 'Account Email', value: proxy.acme.accountEmail || null },
        { key: 'Use Production', value: proxy.acme.useProduction, type: 'boolean' },
        { key: 'Auto Renew', value: proxy.acme.autoRenew, type: 'boolean' },
        { key: 'Renew Threshold', value: `${proxy.acme.renewThresholdDays} days` },
      );
    }

    const actions: IConfigSectionAction[] = [
      { label: 'View Routes', icon: 'lucide:arrow-right', event: 'navigate', detail: { view: 'routes' } },
    ];

    return html`
      <sz-config-section
        title="SmartProxy"
        subtitle="HTTP/HTTPS and TCP/SNI reverse proxy"
        icon="lucide:network"
        .status=${proxy.enabled ? 'enabled' : 'disabled'}
        .fields=${fields}
        .actions=${actions}
      ></sz-config-section>
    `;
  }

  private renderEmailSection(email: appstate.IConfigState['config']['email']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Ports', value: email.ports.length > 0 ? email.ports.map(String) : null, type: 'pills' },
      { key: 'Hostname', value: email.hostname },
      { key: 'Domains', value: email.domains.length > 0 ? email.domains : null, type: 'pills' },
      { key: 'Email Routes', value: email.emailRouteCount },
      { key: 'Received Emails Path', value: email.receivedEmailsPath },
    ];

    if (email.portMapping) {
      const mappingStr = Object.entries(email.portMapping)
        .map(([ext, int]) => `${ext} → ${int}`)
        .join(', ');
      fields.splice(1, 0, { key: 'Port Mapping', value: mappingStr, type: 'code' });
    }

    const actions: IConfigSectionAction[] = [
      { label: 'View Emails', icon: 'lucide:arrow-right', event: 'navigate', detail: { view: 'emails' } },
    ];

    return html`
      <sz-config-section
        title="Email Server"
        subtitle="SMTP email handling with smartmta"
        icon="lucide:mail"
        .status=${email.enabled ? 'enabled' : 'disabled'}
        .fields=${fields}
        .actions=${actions}
      ></sz-config-section>
    `;
  }

  private renderDnsSection(dns: appstate.IConfigState['config']['dns']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Port', value: dns.port },
      { key: 'NS Domains', value: dns.nsDomains.length > 0 ? dns.nsDomains : null, type: 'pills' },
      { key: 'Scopes', value: dns.scopes.length > 0 ? dns.scopes : null, type: 'pills' },
      { key: 'Record Count', value: dns.recordCount },
      { key: 'DNS Challenge', value: dns.dnsChallenge, type: 'boolean' },
    ];

    return html`
      <sz-config-section
        title="DNS Server"
        subtitle="Authoritative DNS with smartdns"
        icon="lucide:globe"
        .status=${dns.enabled ? 'enabled' : 'disabled'}
        .fields=${fields}
      ></sz-config-section>
    `;
  }

  private renderTlsSection(tls: appstate.IConfigState['config']['tls']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Contact Email', value: tls.contactEmail },
      { key: 'Domain', value: tls.domain },
      { key: 'Source', value: tls.source, type: 'badge' },
      { key: 'Certificate Path', value: tls.certPath },
      { key: 'Key Path', value: tls.keyPath },
    ];

    const status = tls.source === 'none' ? 'not-configured' : 'enabled';
    const actions: IConfigSectionAction[] = [
      { label: 'View Certificates', icon: 'lucide:arrow-right', event: 'navigate', detail: { view: 'certificates' } },
    ];

    return html`
      <sz-config-section
        title="TLS / Certificates"
        subtitle="Certificate management and ACME"
        icon="lucide:shield-check"
        .status=${status as any}
        .fields=${fields}
        .actions=${actions}
      ></sz-config-section>
    `;
  }

  private renderCacheSection(cache: appstate.IConfigState['config']['cache']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Storage Path', value: cache.storagePath },
      { key: 'DB Name', value: cache.dbName },
      { key: 'Default TTL', value: `${cache.defaultTTLDays} days` },
      { key: 'Cleanup Interval', value: `${cache.cleanupIntervalHours} hours` },
    ];

    if (cache.ttlConfig && Object.keys(cache.ttlConfig).length > 0) {
      for (const [key, val] of Object.entries(cache.ttlConfig)) {
        fields.push({ key: `TTL: ${key}`, value: `${val} days` });
      }
    }

    return html`
      <sz-config-section
        title="Cache Database"
        subtitle="Persistent caching with smartdata"
        icon="lucide:database"
        .status=${cache.enabled ? 'enabled' : 'disabled'}
        .fields=${fields}
      ></sz-config-section>
    `;
  }

  private renderRadiusSection(radius: appstate.IConfigState['config']['radius']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Auth Port', value: radius.authPort },
      { key: 'Accounting Port', value: radius.acctPort },
      { key: 'Bind Address', value: radius.bindAddress },
      { key: 'Client Count', value: radius.clientCount },
    ];

    if (radius.vlanDefaultVlan !== null) {
      fields.push(
        { key: 'Default VLAN', value: radius.vlanDefaultVlan },
        { key: 'Allow Unknown MACs', value: radius.vlanAllowUnknownMacs, type: 'boolean' },
        { key: 'VLAN Mappings', value: radius.vlanMappingCount },
      );
    }

    const status = radius.enabled ? 'enabled' : 'not-configured';

    return html`
      <sz-config-section
        title="RADIUS Server"
        subtitle="Network authentication and VLAN assignment"
        icon="lucide:wifi"
        .status=${status as any}
        .fields=${fields}
      ></sz-config-section>
    `;
  }

  private renderRemoteIngressSection(ri: appstate.IConfigState['config']['remoteIngress']): TemplateResult {
    const fields: IConfigField[] = [
      { key: 'Tunnel Port', value: ri.tunnelPort },
      { key: 'Hub Domain', value: ri.hubDomain },
      { key: 'TLS Configured', value: ri.tlsConfigured, type: 'boolean' },
    ];

    const actions: IConfigSectionAction[] = [
      { label: 'View Remote Ingress', icon: 'lucide:arrow-right', event: 'navigate', detail: { view: 'remoteingress' } },
    ];

    return html`
      <sz-config-section
        title="Remote Ingress"
        subtitle="Edge tunnel nodes"
        icon="lucide:cloud"
        .status=${ri.enabled ? 'enabled' : 'disabled'}
        .fields=${fields}
        .actions=${actions}
      ></sz-config-section>
    `;
  }

  private formatUptime(seconds: number): string {
    const days = Math.floor(seconds / 86400);
    const hours = Math.floor((seconds % 86400) / 3600);
    const mins = Math.floor((seconds % 3600) / 60);

    const parts: string[] = [];
    if (days > 0) parts.push(`${days}d`);
    if (hours > 0) parts.push(`${hours}h`);
    parts.push(`${mins}m`);
    return parts.join(' ');
  }
}